![]() ![]() Changes in thyroid function can affect the external muscles that control the eye. Thyroid dysfunction: The thyroid gland is in the neck and produces a hormone called thyroxine.Other conditions that can cause double vision include: This occurs because the brain had been suppressing signals from one of the eyes in an attempt to avoid double vision. ![]() In some cases, the treatment of a squint can also cause double vision. Sometimes, a squint can return later in life for people who had a squint as a child. the nerves controlling the eye muscles have abnormalities.This condition might be because the affected eye has the following difficulties: Strabismus causes the eyes to look in slightly different directions. However, the condition does not always result in double vision. Strabismus is relatively common in children. This condition occurs when the eyes are not correctly aligned. Causes of binocular double visionĪ common cause of binocular double vision is a squint or strabismus. Damage to the muscles that move the eyes or the nerves that control eye movement can create a double image.ĭamage in specific parts of the eye, like the lens or cornea, can also cause diplopia. It can be nerve or muscle damage.Ĭertain illnesses can weaken the muscles moving the eyes and produce double vision. The eyes must work together to create depth perception.Īnything that disrupts this process can cause diplopia. The brain combines the representations from each eye and perceives them as one clear picture. I hope you liked this article, a curiosity piece of sorts as I was reading on myths and stumbled upon this very curious one.Īs for me, I think that maybe this genetic problem is so rare that we simply didn’t have any cases of it since modern medicine went mainstream – after all, we only have a handful of cases written down in the last 2000 years of history.Share on Pinterest Jasmin Merdan/Getty ImagesĮach eye creates its own image of the environment. There is photographic evidence to support Polycoria now, so who knows if Pupula Duplex will also be proven when the next patient is born in modern times where his case will be reported and registered – after all, there are plenty of mentions of Pupula Duplex cases in the past, though medical records were close to non-existent in those days. There is some evidence to back up that this condition can exist, but unfortunately, it is not enough to prove it, and if you believe the absence of definitive proof means something doesn’t exist, then this condition doesn’t exist and may be considered a myth. In modern ophthalmology, you won’t ever find the term in the literature, and some people even go as far as debating the origin of the term, saying it could probably be used in the past to define other eye conditions. In Conclusion: Is Pupula Duplex a Real Condition? However, Polycoria was proven to exist – not Pupula Duplex, but a different condition. There are no photos of Henry available (1931) and nobody reported the case to a health professional, which is unfortunate but comprehensible so it doesn’t add or take much from the myth/condition. There was also a show called “Ripley’s Believe it or Not” by Robert Ripley, and in that show, he says that in 1931, he met a man named Henry Hawn who HAD double pupils and resided in Mills, Kentucky. When the page was tracked to its author, the Wiki editor says he was tricked and thought pupula duplex or evil eye was a real condition, and that he later took the page down because there was no sufficient evidence. You can see the evil eye depicted in a lot of works by great ancient writers, and in 2013 we found a Wikipedia page that existed registering “Evil Eye” as a real condition, so the plot thickens. Pupula Duplex or Double Pupil May Explain Evil Eye!Īnother common mention throughout history is of the “Evil Eye”. Some people say this may represent Polycoria as well. ![]() ![]() Well, just to finish up with Liu Ch’ung’s story, the Ripley’s Museum of Wax in London had his statue made and the figure is represented with four pupils and four irises – this goes to show people do take this story seriously. Interesting concepts, but can we go further? This is why some researchers claim maybe Liu Ch’ung had Pseudopolycoria instead of Pupula Duplex. Not only that, health professionals and experts claim that if the condition existed, people would suffer from symptoms that would be reminiscent of those with holes in the Iris. However, these records are easy to prove and could simply be an age-old story. Liu could allegedly see without any complications and like anyone else. The strange and rare condition was reported to affect Liu Ch’ung, the minister of state. The first mention of the double pupil condition, or the Pupula Duplex genetic trait, comes from Ancient China, in 995 AD. Is Pupula Duplex a Real Condition? Double Pupil Disease: ![]()
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